interface for adding AND tags WHERE a condition is true

[burritojustice]

There are currently two operators that you can use to access tags in XYZ -- , for OR and + for AND.

Multiple tags of OR tags are easy to handle. AND gets trickier -- we effectively support two at the moment, though you can manually add more with + in the URL.

What is trickier is grouping ANDs with ORs to simulate a WHERE.

https://s3.amazonaws.com/xyz-demo/scenes/xyz_tangram/index.html?space=pcwNR9I9&token=AOsE9k2EdCdT8lEX12PDZ38&basemap=refill-dark&buildings=1&randomColors=0&points=0&lines=0&outlines=0&highlight=0&roads=1&water=0&tags=name%4036%2Coperated_by_name%40san_francisco_municipal_transportation_agency%2Cname%4033&property=vehicle_type#12.564472524535331/37.7568/-122.4332

In order to select the 38 and 48 bus lines from SF Muni in this dataset, we need to append operated_by_name@san_francisco_municipal_transportation_agency to each bus name@ tag.

tags=name@48+operated_by_name@san_francisco_municipal_transportation_agency,name@48,name@38+operated_by_name@san_francisco_municipal_transportation_agency,name@48

While I am wary about creating a query builder, a simple WHERE assistant using ANDs will be a powerful addition to selecting tags with OR.

Possible interface options:

• add a where button next to and and or -- select your where first, and then your ORs 🤔
• add a text box to type in the tag 😐
• add a second column of checkboxes for WHERE 😰